Phys. Rev. A 72, 042327 (2005) [4 pages]

Optimal phase estimation for qubits in mixed states

Abstract

References

Citing Articles (5)

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Giacomo Mauro D’Ariano^*, Chiara Macchiavello^†, and Paolo Perinotti^‡
QUIT Group of the INFM, unità di Pavia and Dipartimento di Fisica “A. Volta,” via Bassi 6, I-27100 Pavia, Italy

Received 18 February 2005; published 26 October 2005

We present the optimal phase estimation for qubits in mixed states, for an arbitrary number of qubits prepared in the same state.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.72.042327

DOI:

10.1103/PhysRevA.72.042327

PACS:

03.67.−a, 03.65.Ta

^*Electronic address: dariano@unipv.it

^†Electronic address: chiara@unipv.it

^‡Electronic address: perinotti@fisicavolta.unipv.it

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Phys. Rev. A 72, 042327 (2005) [4 pages]

Optimal phase estimation for qubits in mixed states